TY - JOUR
T1 - Microstructural characteristics and the charge-discharge characteristics of Sn-Cu thin film materials
AU - Wu, Chao Han
AU - Hung, Fei Yi
AU - Lui, Truan Sheng
AU - Chen, Li Hui
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009/2
Y1 - 2009/2
N2 - In this study, radio frequency magnetron sputtering was used to prepare Cu6 Sn5 film anodes. The effects of the thickness of the film and its index of crystallinity (IOC) on the charge-discharge capacity characteristics are discussed. Increasing the thickness of the film anode from 500 to 1500 nm, not only raised the IOC, but also improved the migration of lithium ions and electrons because of the lower resistivity. So, the cyclability of the as-adopted film was enhanced with increasing the film thickness. After recrystallization, the IOC rose and the resistivity fell. However, cracks on the film induced by thermal strain increased the area of the passive film, resulting in reduced cyclability. Also, prolonging the duration of sputtering (5000 nm) led to a deterioration in the charge-discharge capacity.
AB - In this study, radio frequency magnetron sputtering was used to prepare Cu6 Sn5 film anodes. The effects of the thickness of the film and its index of crystallinity (IOC) on the charge-discharge capacity characteristics are discussed. Increasing the thickness of the film anode from 500 to 1500 nm, not only raised the IOC, but also improved the migration of lithium ions and electrons because of the lower resistivity. So, the cyclability of the as-adopted film was enhanced with increasing the film thickness. After recrystallization, the IOC rose and the resistivity fell. However, cracks on the film induced by thermal strain increased the area of the passive film, resulting in reduced cyclability. Also, prolonging the duration of sputtering (5000 nm) led to a deterioration in the charge-discharge capacity.
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U2 - 10.2320/matertrans.MER2008291
DO - 10.2320/matertrans.MER2008291
M3 - Article
AN - SCOPUS:63149174253
VL - 50
SP - 381
EP - 387
JO - Materials Transactions
JF - Materials Transactions
SN - 0916-1821
IS - 2
ER -